Governor stop control and belt tightener.



H. T. MORGAN.

GOVERNOR STOP CONTROL AND BELT TIGHTENBR.

APPLICATION FILED 1130.19, 1912. I

Patented May 5, 1914.

Smoeutop a H, T. MORGAN. GOVERNOR STOP CONTROL AND BELT TIGHTENER.

APPLICATION FILED DEO.19, 1912. I

Patented May 5, 1914.

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Wviueoozo 0.. WASHINGTON D c Unrrnn HARRY T. MORGAN, OF PHILADELPHIA,PENNSYLVANIA.

GOVERNOR STOP CONTROL AND BELT TIGHTENER.

Specification of Letters iEatent.

Patented May 5, 1914.

Application filed December 19, 1912. Serial No. 737,706:

To all whom it may concern:

Be it known that I, HARRY T. MORGAN, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia, State ofPennsylvania, have invented cer tain new and useful Improvements inGovernor Stop Control and Belt Tighteners; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to certain new and useful improvements in agovernor stop control device and belt tightener for engines.

As is well known, in certain types of steam engines, such as the Corlissgear engines, the governor is so constructed that when it is down in itslowest position the valves of the engine will not admit steam to thecylinder. The purpose of this is that should the belt driving thegovernor break the governor will drop to its lowest position and shutdown the engine. Usually a governor stop is provided so that if in theoperation of the engine it is desired to avoid shutting the latter downcompletely the stop can be set in a position to prevent the governorgoing to the limit of its downward movement, thereby allowing the engineto be readily started. again. It frequently happens that the stop is notremoved after the engine is started and thus should the governor beltslacken or break the governor will come to rest on the stop and continueto allow the valve to admit steam to the engine, causing the latter torun away, with the consequent liability of wreckage or damage.

The reason for leaving the stop in position to hold the governor up isto prevent the governor from shutting down the engine in case of anoverload which may he momentarily encountered by the engine, but whichis sufficient to cause the governor to lose its velocity and fall,

In carrying out my invention it is my purpose to provide a mechanism bymeans of which the governor stop may be main tained in position toprevent the shutting down of the engine in case of an overload, but suchmechanism will. automatically and immediately remove the stop and allowthe governor to fall to its lowermost position to stop the engine 111the event the governor belt breaks or slips off from the pulley.

It is also my purpose to provide an automatic governor stop controllingdevice and combined belt tightener which will embody in its constructionthe desired features of efficiency, simplicity, economy and reliability.

In the present instance, I have shown my invention as employed inconnection with a well known form of governor, such as is used on theRice and Sargent Corliss engine, but I wish it to be understood that theinvention may be employed in connection with other types of engines asit is not limited in its useful application to'the particular structureherein set forth by way of illustration.

My invention consists in construction, combination and arrangement ofparts, set forth in and falling within the scope of the appended claims.

In the accompanying drawingsi Figure 1 is a top plan view of themechanism embodying my invention and showing the application of the samein connection with the governor stop. Fig. 2 is a View in end elevation.Fig. 3 is a cross sectional View taken on the line 33 of Fig. 1. Fig. 4is a sectional view taken on the line H of Fig. 1. Fig. 5 is aconventional illustration of the governor construction and illustratingthe location and cooperation of the governor stop control pin therewith.Fig. 6 is a view taken on line 66 of Fig. I

In order that my invention may be readily understood by those skilled inthe art, I have in Fig. 5 conventionally illustrated a Rites governor,such as is used in connection with the Rice and Sargent Corliss engine.The governor shaft which is shown at 5 turns the usual Weight springsand links within the casing 6, the velocity of such weights causing vthespool 7 to move'out or in. This spool is free to revolve within thecollar 8 and when such spool moves out or in shifts the collar 8 and thebar 9 loosely mounted in the brackets 10. The bar 9 in turn moves themember 11 which is rigid therewith and is connected with the link 12which in turn is connected with the lever 13. Thislever is connected tothe shaft 14 and is held in the lever 13 is shifted by the links 12 itlikewise moves the link 16 up or down, this link 16 having a projection17 on'the lower end thereof, which fits in the slot 18 of the bracket19, this slot controlling the move place by the nut and washer as at 15.When ment of the link and causing it to move to the right or to theleft. This link 20 operates the crank 21 which is rigidly fastened tothe shaft I l so that when the latter turns the crank also turns,thereby actuating the governor cut off rod 23.

The governor stop is shown at 2st, and in Fig. 6 is shown in itsuppermost position to receive the governor when the engine is stopped.The dotted lines in said figure illustrate the position of the governorstop in its lowermost position. Connected with the governor stop Qel.the stud pin 25 eX- tending through the bracket 19 and carrying at itsopposite end an arm 26 which is designed to be contacted with andoperated by the governor stop controlling rod which forms an importantfeature of my invention such rod being indicated by the reference lettera. At 27 is a pin for limiting the movement of the governor stop 2st,and when in its elevated position the stop rests against this pin, thelatter being carried by the bracket 19. In the type of governor shownherein, when the projection 17 on the link 16 is at the end of itstravel in the slot, either up or down, the governor cut off rod is atthe limit of itstravel and will not allow the valves to admit steam tothe cylinder. The governor stop 24: as will be understood, keeps thegovernor from dropping all the way down should the engine encounter amomentary overload.

I will now proceed to describe in detail the construction andarrangement of my invention and its operation and connection with thegovernor. As above pointed out, the arm or projection 17 is designed torest upon the governor stop 24: when the engine stopped and the governorat rest. To obtain the automatic control of the governor stop I providethe following control mechanism: The numeral. 28 indicates the frameupon which is slidingly mounted the carriage 29, through the medium of adove-tailed rib 30 moving in the dove-tailed guide way 31. 32 is thegovernor belt pulley driven by the governor belt 33. This pulley ismounted upon the shaft 34v carrying at its opposite end the bevel gearmeshing with a similar bevel gear 36, which latter is secured to thehollow sleeve 37 which sleeve is provided with a key way 38 cutlongitudinally thereof and such sleeve is placed inside of the car riage29 and is provided with a collar 39 to hold it in position. This sleeve37 with the key way drives the spindle 4-0 by means of the key e lcarried by and fast with the spindle 40, but free to move in the key wayin the sleeve 37. This construction permits the sleeve and the wholecarriage 29 to move away from the spindle 40. The spindle e0 is providedwith a bevel gear ll meshing with a similar bevel gear 42, the gearsbeing held in engagement by means of a suitable collar 43 which forms apart of the bearing sleeve lel, the spindle being free to turn in thecollar, and it will thus be seen that the gear 4:2 drives the shaft 5,which in turn drives the governor. The carriage 29 is further providedwith a bevel slot do in which is seated the bevel foot so of the governor stop control pin a.

When the engine is running and the governor performing its normaloperation the governor stop will elevate in. its up position with thegovernor control pin a in contact with the arm 26 of the stop. If theengine should become suddenly overloaded the governor will lower ontothe governor stop and descend no farther, thus allowing the engine tocontinue running, but in case the governor belt should break or slip offthe pulley, the carriage 29 would be immediately moved or shifted on thebed by means of the weights 47 which are connected to the carriage bythe cables or cords 48 running over the rollers 4l9. This slidingmovement of the carriage will cause the controlling rod a. to strike thearm 26 and move the governor stop out of its elevated position turningthe same to the position shown in dotted lines in Fig. 5. Consequentlywhen the governor dropped it would move to its lowest position and cutoff the engine. It will further be seen that the weights 47 exert a pullon the governor belt 33 and thus maintain the belt under the propertension thus taking up any slack which might occur. The stretching ofthe belt may at times alter the position of the stop control rod a andthis is compensated for by adjusting the screw rod 50 which passesthrough the pin a. This screw rod is held in position by means of lugpassing in the ends of the slot 45.

While I have herein shown and described one particular embodiment of myinvention, 1 wish it to be understood that I do not limit myself to allthe precise details of construe tion. herein set forth by way ofillustration, as modification. and variation may be made withoutdeparting from the spirit of the invention or exceeding the scope of theappended claims. For instance, instead of employing weights 47, I mayuse springs or other equivalent devices, and the control rod ()6 may bedesigned to operate other forms of mechanism for removing the governorstop.

What I claim is:

1. The combination with a governor control and belt driven mechanism foractuating the same, a stop adapted to hold the governor out of cut ofi'position, a sliding can riage, and a stop control rod connected with thecarriage and adapted upon the movement of the latter when the tensionupon the belt is broken, to contact with the stop and move the latteraway from its governor holding position.

2. The combination with a governor and belt driven mechanism foractuating the same, a stop member for holding the governor out of itscut oil position, a bed, a carriage sliding upon the bed, a connectionbetween the carriage and the governor belt, means normally holding thecarriage against the pulling action of the belt, and an element carriedby the carriage and adapted to contact with the governor stop and movethe latter out of governor holding position upon breaking of the tensionof the belt.

3. The combination with agovernor, of mechanism for actuating thelatter, said mechanisms including a shaft, a pulley and a belt fordriving the pulley, a sliding carriage in which the shaft is journaled,means connected to the sliding carriage acting in opposition to the pullof the belt and an element carried by the sliding carriage and adaptedWhen the latter is moved by the last mentioned means upon the breakingof the tension of the belt to contact With the stop and shift the latterto allow the governor to move to its out off position.

l. The combination with a governor, and a. stop for holding the latterout of cut off position, of a bed, acarriage sliding on the bed, a shaftjournaled in the carriage, a drive pulley on the shaft, a drive belt forthe pulley, power transmitting mechanism between the shafts and thegovernor for actuating the latter, a governor stop controlling rodconnected with the carriage and Weights also connected with the carriageand adapted to act upon the same against the pulling of the belt, theconstruction and arrangement being such that upon the breaking of thebelt the carriage Will be shifted to cause the control rodtomove thegovernor stop and permit the governor to move to its cut 011 position.

In testimony Whereof,,I affix my signature, in the presence of twoWitnesses.

HARRY T. MORGAN.

Witnesses M. C. MORGAN, CHAS. L. STRAUSS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G. V

